Delete vendor/ and the route proxy's: the build module fetches the modules, the root image builds with -mod=mod (issue 1305, C6)

vendor/github.com/klauspost/compress/flate/matchlen_generic.go

@@ -1,34 +0,0 @@
-// Copyright 2019+ Klaus Post. All rights reserved.
-// License information can be found in the LICENSE file.
-
-package flate
-
-import (
-	"math/bits"
-
-	"github.com/klauspost/compress/internal/le"
-)
-
-// matchLen returns the maximum common prefix length of a and b.
-// a must be the shortest of the two.
-func matchLen(a, b []byte) (n int) {
-	left := len(a)
-	for left >= 8 {
-		diff := le.Load64(a, n) ^ le.Load64(b, n)
-		if diff != 0 {
-			return n + bits.TrailingZeros64(diff)>>3
-		}
-		n += 8
-		left -= 8
-	}
-
-	a = a[n:]
-	b = b[n:]
-	for i := range a {
-		if a[i] != b[i] {
-			break
-		}
-		n++
-	}
-	return n
-}